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A NOT gate had one wire going in and one wire coming out, and inverted the input wire.

A NOT gate will take a single input and produce the opposite: a one produces 0, a zero produces 1.

Monroe and his colleagues crafted a logic element called a controlled- NOT gate out of a beryllium ion.

The problem was he went to Gate 9B, not Gate 9A.

I am determined to put a stop to them, and indeed it is becoming a grave question with me whether I shall not gate the whole school during the remainder of the term.